Electrical Distribution
Transformers
Dielectric Liquid immersed Transformers
Hermetically sealed completely filled type
Up to 36 kV
Electrical Distribution Transformers
Contents
Specialisation
3
The Transformer
5
Tests
6
Technological Development
7
Sustainability
9
Overview
11
Equipment
12
Technical Characteristics
14
Up to 2500 kVA and Insulation Level up to 24 kV D0 Ck (AB’)
14
Up to 2500 kVA and Insulation Level up to 24 kV C0 Ck (AC’)
16
Up to 2500 kVA and Insulation Level up to 24 kV C0 Bk (CC’)
18
Up to 2500 kVA and Insulation Level up to 36 kV B036Bk36
20
The quality of the products we design, manufacture and install
is backed by the implementation and certification of an
ISO 9001:2008-compliant quality management system.
Our commitment to environmental protection is asserted
by the implementation and certification of an ISO 14001
environmental management system.
As a result of the constant development of standards and
new designs, the characteristics of the items shown in this
catalogue are subject to change without prior notice.
Such characteristics and the availability of materials shall be
effective only when confirmed by our Technical-Commercial
department.
2
SPECIALISATION
The incorporation into Ormazabal in 2001 of the
distribution transformer manufacturer Cotradis constituted
a strategic milestone for us.
Our specialisation in Medium Voltage is backed by the
certification of our transformers in major European electrical
companies.
The exchange of know-how between our technical teams has
significantly reinforced the value added for our customers.
We manufacture a wide range of dielectric liquid
immersed distribution transformers, compliant with all of
the requirements in current international regulations and
with a range of powers from 25 kVA to 2500 kVA and
insulation levels up to 36 kV.
Growing energy demands, higher quality requirements in
energy supply and the priority to reduce the consumption
of natural resources require the use of equipment which
responds with high levels of reliability, safety and energy
efficiency.
Focusing on the needs of our customers and mastering
new technologies allows us to offer products which comply
with these requirements.
3
Furthermore, close collaboration with our customers
enables us to develop transformers conforming to their own
particular standards and specifications.
INNOVATION AND QUALITY
Our commitment to innovation places us at the
technological forefront of Europe.
Therefore our products meet the most demanding
worldwide requirements and are certified by
internationally renowned laboratories.
Our quality, environmental and health& safety
prevention policies establish our commitment to fostering
and being part of an environmentally-responsible society.
Within this framework, our quality management system is
internationally recognised through ISO 9001 certification.
Furthermore, our strong commitment to the environment
is reflected in the implementation of an environmental
management system, certified according to
the ISO 14001 standard, which monitors the impact of
activities on the environment.
This policy also aims to promote and establish a culture of
excellence and respect for personal health and safety, in
accordance with standard OHSAS 18001. Its scope ranges
from our team of professionals and partners to the end
user.
4
Electrical Distribution Transformers
THE TRANSFORMER
ACTIVE PART
The active part of the transformer is the energy
transformation system, composed of the ferromagnetic
core, the windings and the medium and low voltage
connections.
TANK AND DIELECTRIC
The transformer’s tank and the dielectric liquid
provide the necessary insulation and cooling.
1
Active part
2
Tank and
dielectric
2
1
Windings
y Concentric windings.
y Insulation between layers:
Cellulose with epoxy resin
which compacts the coils,
once cured.
y Coils are manufactured
using the latest techniques
and machinery.
y Expertise in coil cooling.
y Careful manufacturing of
coils and cooling channels.
Advantages
Tank and Dielectric Liquid
y Optimised to withstand short
circuit forces.
y Increased heat dissipation
surface.
y Absorption of variations in
the volume of the dielectric
y Elastic Corrugated tank with
liquid caused by changes in
cooling fins.
its temperature.
y Mechanical and electrical
protection.
y Improved heat dissipation in
the windings.
y Use of high-quality cellulosic
materials.
y Optimum handling and
y Guaranteed insulation.
storage to preserve insulation
properties.
5
Connections and Tap Changer
Advantages
y MV and LV terminals.
y Transformer connection to
the outside.
y Off-circuit Tap changer.
y Secondary voltage can be
adjusted precisely.
y Completely filled with
dielectric liquid and
hermetically sealed tank.
Advantages
y No aging of the dielectric
liquid as there is no contact
with the air.
y Minimal maintenance
requirements.
y Small size.
y No expansion tank or air
dehydrating needed
y Lighter in weight.
y Electromagnetic field
shielding.
y Lower noise level.
y Immersed in dielectric liquid. y Better behaviour in the event
of overloads and harmonics.
y Surface treatment and paint.
y Protection against corrosion,
atmospheric agents,
insolation and impacts.
TESTS
Our transformers are subjected to the tests described in the IEC 60076 series of standards.
We have our own laboratories for this purpose, equipped with modern, precise measurement devices and systems
that are certified and calibrated according to the directives of the ISO 9001 standard, to ensure that our products
comply with the most demanding quality standards.
ROUTINE TESTS
All of the transformers manufactured are subjected to the
following routine tests, in accordance with IEC 60076-1:
• Winding resistance measurement.
• Measurement of the voltage ratio and verification of
the vector group.
• Measurement of the short-circuit impedance and
load losses.
• Measurement of no -load losses and current.
• Dielectric routine tests:
· Separate source AC withstand voltage test
(also known as Applied over-voltage test or Power frequency test)
· Induced AC voltage test (ACSD)
(also known as Short duration induced AC withstand voltage test)
SEPARATE SOURCE AC WITHSTAND VOLTAGE TEST
(Applied over-voltage test or Power frequency test)
MV
Highest voltage for the equipment, Um, (Insulation Level). [kV]
Rated withstand Voltage of the test (1 minute). [kV]
12
28
17.5
38
12
75
17.5
95
LV
24
50
36
70
1.1
3
24
125
36
170
1.1
20
3.6
10
TYPE TESTS
With our customer’s agreement, the following tests are
performed in accordance with current international
regulations:
• Temperature-rise test.
• Dielectric type tests:
· Lightning impulse (LI) test.
LIGHTNING IMPULSE (LI) TEST
MV
Highest voltage for the equipment, Um, (Insulation Level). [kV]
Rated withstand Voltage for Lightning impulse test (1.2 / 50—s). [kV]
LV
3.6
20
6
Electrical Distribution Transformers
SPECIAL TESTS
Special tests specifically requested by the customer:
· Special dielectric tests.
· Partial discharge measurement test.
· Winding capacities measurement – earth and
between windings.
· Zero-sequence (homopolar) impedance
measurement (in three-phase transformers).
· Ability to withstand Short-circuit test
(IEC 60076-5), performed in accredited external
and internal laboratories (HPL).
· Sound level measurement(IEC 60076-10).
· Measurement of no-load current harmonics.
· Measurement of insulation resistance and/or
measurement of the dissipation factor (tan delta) of
the insulation capacitances.
ADDITIONAL TESTS
• Dielectric Oil Tests
The transformer’s operative life is largely related to the
quality of the dielectric liquid. We assure the highest
quality standards by means of strict qualification and
product auditing processes as well as by applying the
most advanced technologies in the treatment process.
·
·
·
·
·
·
·
·
7
Density at 20ºC
Viscosity at 40ºC
Water content
Breakdown voltage
Dielectric dissipation factor
Interfacial tension
Acidity
Flash point
• Tank Tests
· EN 50464-4 Endurance test
• Paint Tests
· Film Thickness measurement
· Adherence test
· Hardness test
· Bend test
· Impact test
· Cupping test
· Salt spray test
TECHNOLOGICAL DEVELOPMENT
The quality and reliability of our products is demonstrated through the testing and certification of our transformers in
independent, internationally-renowned laboratories.
Furthermore, the technological development and passion for innovation, which has been fundamentally apparent
throughout the history of our company, is reinforced by our High Power Laboratory (HPL) with a capacity up to
2500 MVA.
These are our own facilities which enable ongoing tests and which combined with our highly-qualified staff, further
certify our technological independence.
Together with external organisations and official bodies, we also participate in market quality control campaigns to
assure the verification of our products.
8
Electrical Distribution Transformers
SUSTAINABILITY
Sustainability, understood as the best compromise between satisfying social demands, caring for the environment and
financial aspects.
• Social Demands:
· Safety of people and goods.
· Continuity of service.
• Financial Aspects
· Optimum use of raw materials.
· Longer equipment life, endurance and
robustness.
· Equipment adaptable to network evolution.
· Equipment durability.
y Caring for the Environment:
· Reduction in the volume of dielectric liquid.
· Minimal dimensions.
· Minimal losses in the transformer.
· Low risk of oil leakage.
· Non-aggressive for the surrounding
environment.
· Recyclability.
APPLICATION
These guidelines allow us to develop distribution
transformers with the following characteristics:
• Dielectric Liquid completely immersed
Hermetically-Sealed Transformer
· Hermetically-sealed tanks:
- No expansion tank is needed.
- Less dielectric liquid used than in other types of
transformer.
· No contact between the dielectric liquid and
external agents (air, humidity, pollution, etc.)
- Prevents deterioration of the dielectric’s
characteristics.
- Low-level maintenance.
· Minimal risk of leakages:
- Tank robustness (high quality materials).
- Welding processes carried out by qualified staff.
- Leak tests performed in all transformers.
9
• Minimal Environmental Impact
· Respect for the environment:
- Use of highly-recyclable materials.
- Rationalisation in the use of raw materials.
- Optimised transformer dimensions
· Optimum consumption of raw materials:
- Materials selection.
- Maximisation of their characteristics.
· Low electrical energy consumption:
- Advanced technology in design,
manufacturing and testing.
- Minimal loss transformers.
- Safe, reliable products.
· ISO 14001 certification.
• Low Noise Level: :
· An optimum design and assembly of the
ferromagnetic core enables us to drastically
reduce the level of noise generated by the
transformer.
· There are two components that identify the level
of noise produced by a transformer:
LwA = LpA + KS
Where:
LwA: Acoustic Power (cause)
LpA: Acoustic Pressure (effect)
KS factor (>0) which depends on the size
of the transformer.
To define a transformer, the use of Acoustic
Power LwA is recommended since it is a value
which is independent from the environment and
is therefore the best magnitude for assessing
the acoustic emissivity of a transformer.
y PCB Free
· Our transformers are only manufactured using new
y Electromagnetic Compatibility
Our transformers are passive elements in terms of
components and without any PCBs, in strict compliance
electromagnetic compatibility.
In other words, they
with current regulations.
work satisfactorily without adding electromagnetic noise
that is intolerable for equipment in their surroundings
and they withstand such interference caused by other
devices.
N.B.: The currents that circulate through the conductors
connected to the transformers, especially low-voltage ones,
can cause significant electromagnetic fields. The installation
designer must make sure that these cables are laid such that
the fields are minimised or, if necessary, measures must be
adopted to limit their effects.
10
Electrical Distribution Transformers
From 25 to 2500 kVA • Insulation Level 24 and 36 kV
Dielectric Liquid Immersed Transformers
OVERVIEW
DESCRIPTION
These transformers comply with the following characteristics:
• Three-phase transformers, 50 Hz for installation indoors or outdoors
• Hermetically-sealed
• Completely Immersed in mineral oil in accordance with standard IEC 60296.
• ONAN cooling.
• Colour: RAL 7033 (other colours under request).
The data and values shown correspond to the Normal Service Conditions
referred to in standard IEC 60076-1.
N.B.:For other configurations, please contact our Technical-Commercial Department.
LV single phase Busbar
Bushings (optional)
LV connection Flags
STANDARDS
The transformers comply with
the following standards:
EN 50464
IEC 60076
Metric M12
Metric: from M20 to M55
CONNECTIONS
LOW VOLTAGE CONNECTION
LV PORCELAIN BUSHINGS FOR 420V *
Rated Power [kVA]
25
40
50
63
100
250
160
250
400
500
630
800
1000
1250
1600
2000
2500
Rated current [A]
250
250
250
250
250
630
630 1000 1000 1600 1600
2000
3150
3150
4000
Dimension - Metric d1
M12
M12
M12 M12 M12
M12
M20
M20
M42
M48
M48
M55
Material
Brass Brass Brass Brass Brass Brass Brass Brass Brass Brass Brass Brass Copper Copper Copper Copper
M30
M30
M42
M42
CONNECTION PARTS – LV FLAGS
Metric
M12
M12
e [mm]
-
-
f0 [mm]
40
40
Ø [mm]
14
14
M12 M12 M12
-
M12
M20
M20
M30
M30
M42
M42
M42
M48
M48
M55
-
32
32
32
32
40
40
40
40
40
70
-
-
40
40
40
40
60
60
60
60
100
100
100
120
120
150
14
14
14
14
14
14
14
14
14
14
14
14
14
18
LV SINGLE POLE BUSBAR BUSHINGS FOR INDOOR INSTALLATION (OPTIONAL)
Rated Power [kVA]
Rated current [A]
25
40
50
63
100
160
250
400
500
630
800
1000
1250
1600
-
-
-
-
-
-
630
630
1600
1600
1600
1600
-
-
-
-
-
-
-
-
Al
Al Copper Copper
Material
(*) For other secondary voltages, please contact our Technical-Commercial Department
Copper Copper
MEDIUM VOLTAGE CONNECTION
CONNECTORS FOR MV PLUG-IN BUSHINGS (NOT SUPPLIED WITH THE TRANSFORMER)
Insulation [kV]
11
24
36
Type A elbow connector (250 A)
Ref. EUROMOLD K-158LR
Type B elbow connector (400 A)
Ref. EUROMOLD M-400LR
Type A straight connector (250 A)
Ref. EUROMOLD K-152SR
-
2000 2500
EQUIPMENT
STANDARD EQUIPMENT
Figure
• Uninhibited mineral insulating oil
• Off-circuit regulation tap changer
(can only be operated without voltage)
• Off circuit voltage tap changer for dual primary
voltage transformers (can only be operated without voltage)
• MV porcelain bushings
• LV porcelain bushings
• LV connection Flags
•630 kVA
• 2 Earthing terminals in the tank
• Draining and sampling device
• Filling device
• Rating plate
• 2 Lifting eyes
• 4 Latching eyes
• 4 Pulling eyes
• Thermometer pocket
IEC 60296
EN 50216-4
EN 50216-4
EN 50464-1
EN 50464-1
EN 50464-1
EN 50464-1
EN 50464-1
EN-50216-4
7
8
9
10
• Wheels
EN-50216-4
13
1
IEC 60214
IEC 60214
EN 50180
EN 50386
•250kVA
1
2
3
4
5
6
11
12
4
2
9
7
3
2
8
12
10
6
11
13
5
12
Electrical Distribution Transformers
OPTIONAL EQUIPMENT
Figure
• MV plug-in bushings
EN 50180
1
• LV single pole busbar bushings
• Thermometer: measures the temperature of the top layer
of the insulation liquid. Available with 2 contacts
(alarm and trigger) and upper limit marker.
• Protection relay
Functions:
Internal tank pressure control
Dielectric liquid temperature control
Oil level control and gas detection
• Dielectric liquid collection device
• Terminal cover box
• Pole mounting brackets and support for surge arresters
EN 50387
2
3
EN 50216-3
4
5
6
7
(application for pole mounted transformers up to 160 kVA).
6
2
1
4
3
7
7
5
OTHER DIELECTRIC LIQUIDS
• Natural, biodegradable ester for application in
electrical transformers. Class K with fire point greater
than 300 ºC.
• Dielectric liquid silicone according to the IEC 60836
standard, Class K with fire point greater than 300 ºC.
• Synthetic biodegradable ester for application in
electrical transformers according to the IEC 61099
standard. Class K, with fire point greater than 300 ºC.
13
From 250 up to 2500 kVA • Insulation Level 24 kV
Dielectric Liquid Immersed Transformers
CHARACTERISTICS 24 kV: D0 CK (AB’)
MV Plug-In Bushings
F
Filling
Device
J
Earth
connection
M12
J
Draining and
Sampling
Device
H H H
C
D1
C
D3
LV Bushings
Wheel
Frames
(skids)
L
K
MV Bushings
Lifting
Eyes
MV Bushings
M
Earth
connection
M12
Wheel
Frames
(skids)
MV Porcelain Bushings
F
K
J
J
Draining and
Sampling
Device
H H H
Thermometer Pocket
L
LV Bushings
D2
F
M
F
D2
Lifting
Eyes
Thermometer
Pocket
MV Regulation
Tap Changer
B
MV Regulation
Tap Changer
B
Filling
Device
A
A
24 kV: D0 CK (AB’)
ELECTRICAL CHARACTERISTICS
RATED POWER [kVA]
Rated Voltage (Ur)
250
400
500
630
800
Primary [kV]
1000
1250
1600
2000
2500
20
No-load Secondary [V]
400 / 410 / 415 / 420 (to be defined)
Vector Group
Dyn11/ Dyn5
No-Load Losses - Po [W]
List D0
530
750
880
1030
1150
1400
1750
2200
2700
3200
Load Losses - Pk [W]
List Ck
3250
4600
5500
6500
8400
10500
13500
17000
21000
26500
4
4
4
4
6
6
6
6
6
6
List D0
60
63
64
65
66
68
69
71
73
76
cosƒ=1
1.37
1.22
1.16
1.11
1.19
1.22
1.25
1.24
1.22
1.23
cosƒ=0.8
3.33
3.25
3.21
3.17
4.44
4.47
4.49
4.48
4.47
4.47
98.51
98.68
98.75
98.82
98.86
98.82
98.79
98.81
98.83
98.83
cosƒ=0.8 98.15
98.36
98.44
98.53
98.58
98.53
98.50
98.52
98.54
98.54
cosƒ=1
98.76
98.90
98.96
99.02
99.06
99.04
99.01
99.03
99.04
99.04
cosƒ=0.8 98.45
98.63
98.70
98.78
98.83
98.80
98.77
98.79
98.81
98.81
250
400
500
630
800
1000
1250
1600
2000
2500
2093
Short-Circuit Impedance (%) at 75ºC
Sound Power Level LwA [dB]
Voltage drop at full load (%)
LOAD
100%
Efficiency (%)
LOAD
75%
cosƒ=1
DIMENSIONS [mm]
RATED POWER [kVA]
A (Length)
1376
1537
1622
1622
1932
1997
2007
1922
1965
B (Width)
930
941
962
962
1161
1200
1200
1224
1277
1487
C (Height to cover)
915
1004
1026
1092
1112
1158
1230
1517
1715
1737
D1 (Height to MV with porcelain bushings)
1300
1389
1411
1477
1497
1543
1615
1902
2100
2122
D3 (Height to MV Plug-In bushings)
1004
1093
1115
1181
1201
1247
1319
1606
1804
1826
D2 (Height to LV with Flags)
1149
1238
1287
1353
1445
1491
1563
1886
2084
2167
F (Separation between MV bushings)
275
275
275
275
275
275
275
275
275
275
H (separation between LV bushings)
150
150
150
150
150
150
150
200
200
200
J (Distance between wheel axis)
670
670
670
670
670
670
820
820
820
1070
K (wheel width)
40
40
40
40
40
40
70
70
70
70
Ø (wheel diameter)
125
125
125
125
125
125
200
200
200
200
L (Wheel)
110
110
110
110
110
110
165
165
165
165
Oil Volume [Litres]
260
330
390
410
510
530
540
1000
1200
1400
1010
1330
1600
1750
2250
2430
2750
3850
4750
5350
Total weight [Kg]
14
From 25 up to 160 kVA • Insulation Level 24 kV
Dielectric Liquid Immersed Transformers
CHARACTERISTICS 24 kV: D0 CK (AB’)
F
F
MV Porcelain Bushings
MV Bushings
Lifting
Eyes
Surge arresters support (Op)
LV Bushings
D1
D2
140
Latching
eyes
C
80
Wheel Frames
(skids)
H
H
H
J
Draining and
Sampling
Device
Thermometer Pocket
(optional)
B
Filling
Device
K
J
L
L
Earth
connection
M12
MV Regulation
Tap Changer
A
ELECTRICAL CHARACTERISTICS
24 kV: D0 CK (AB’)
RATED POWER [kVA]
Rated Voltage (Ur)
2525
40
50
Primary [kV]
63
100
160
20
No-load Secondary [V]
400 / 410 / 415 / 420 (to be defined)
Vector Group
Dyn/Yzn
Yzn11/Dyn11
No-Load Losses - Po [W]
List D0
95
125
145
175
260
375
Load Losses - Pk [W]
List Ck
700
940
1100
1270
1750
2350
4
4
4
4
4
4
List D0
47
49
50
51
54
57
cosƒ=1
2.84
2.40
2.26
2.08
1.81
1.54
cosƒ=0.8
3.96
3.83
3.77
3.70
3.57
3.43
96.92
97.41
97.57
97.76
98.03
98.33
cosƒ=0.8 96.18
96.78
96.98
97.21
97.55
97.92
cosƒ=1
97.46
97.87
98.00
98.15
98.37
98.61
cosƒ=0.8 96.84
97.35
97.52
97.70
97.97
98.26
Short-Circuit Impedance (%) at 75ºC
Sound Power Level LwA [dB]
Voltage drop at full load (%)
LOAD
100%
Efficiency (%)
LOAD
75%
cosƒ=1
DIMENSIONS [mm]
RATED POWER [kVA]
40
50
63
100
160
A (Length)
888
888
888
926
1006
1205
B (Width)
704
704
704
735
796
848
C (Height to cover)
768
810
810
844
889
847
1232
D1 (Height to MV with porcelain bushings)
1153
1195
1195
1229
1274
D3 (Height to MV Plug-In bushings)
857
899
899
933
978
936
D2 (Height to LV with Flags)
918
960
960
994
1039
997
F (Separation between MV bushings)
275
275
275
275
275
275
H (separation between LV bushings)
J (Distance between wheel axis)
K (wheel width)
15
25 25
80
80
80
80
80
80
520
520
520
520
520
520
40
40
40
40
40
40
Ø (wheel diameter)
125
125
125
125
125
125
L (Wheel)
110
110
110
110
110
110
Distance between pole mounting brackets
530
530
530
530
530
530
Oil Volume [Litres]
100
105
105
120
155
200
Total weight [Kg]
360
400
435
515
610
770
From 250 up to 2500 kVA • Insulation Level 24 kV
Dielectric Liquid Immersed Transformers
CHARACTERISTICS 24 kV: C0 CK (AC’)
MV Plug-In Bushings
F
Filling
Device
J
Earth
connection
M12
J
Draining and
Sampling
Device
H H H
C
D1
C
D3
LV Bushings
Wheel
Frames
(skids)
L
K
MV Bushings
Lifting
Eyes
MV Bushings
M
Earth
connection
M12
Wheel
Frames
(skids)
MV Porcelain Bushings
F
K
J
J
Draining and
Sampling
Device
H H H
Thermometer Pocket
L
LV Bushings
D2
F
M
F
D2
Lifting
Eyes
Thermometer
Pocket
MV Regulation
Tap Changer
B
MV Regulation
Tap Changer
B
Filling
Device
A
A
24 KV C0 CK (AC’)
ELECTRICAL CHARACTERISTICS
RATED POWER [kVA]
Rated Voltage (Ur)
250
400
500
630
800
Primary [kV]
1000
1250
1600
2000
2500
20
No-load Secondary [V]
400 / 410 / 415 / 420 (to be defined)
Vector Group
Dyn11/ Dyn5
No-Load Losses - Po [W]
List C0
425
610
720
860
930
1100
1350
1700
2100
2500
Load Losses - Pk [W]
List Ck
3250
4600
5500
6500
8400
10500
13500
17000
21000
26500
4
4
4
4
6
6
6
6
6
6
List C0
55
58
59
60
61
63
64
66
68
71
cosƒ=1
1.37
1.22
1.17
1.11
1.22
1.22
1.25
1.24
1.25
1.23
cosƒ=0.8
3.33
3.25
3.22
3.17
4.47
4.47
4.49
4.48
4.48
4.47
Short-Circuit Impedance (%) at 75ºC
Sound Power Level LwA [dB]
Voltage drop at full load (%)
LOAD
100%
Efficiency (%)
LOAD
75%
cosƒ=1
98.55
98.71
98.77
98.85
98.85
98.85
98.83
98.84
98.83
98.85
cosƒ=0.8 98.20
98.40
98.47
98.56
98.56
98.57
98.54
98.56
98.55
98.57
cosƒ=1
98.81
98.95
98.99
99.05
99.07
99.07
99.06
99.07
99.06
99.08
cosƒ=0.8 98.52
98.69
98.74
98.82
98.84
98.85
98.82
98.84
98.83
98.85
DIMENSIONS [mm]
RATED POWER [kVA]
A (Length)
250
400
500
630
800
1000
1250
1600
2000
2500
1376
1537
1622
1622
1932
1997
2007
1922
1965
2157
B (Width)
930
941
962
962
1161
1245
1224
1224
1277
1487
C (Height to cover)
960
1004
1026
1114
1123
1158
1252
1517
1715
1737
D1 (Height to MV with porcelain bushings)
1345
1389
1411
1499
1508
1543
1637
1902
2100
2122
D3 (Height to MV Plug-In bushings)
1049
1093
1115
1203
1212
1247
1341
1606
1804
1826
D2 (Height to LV with Flags)
1194
1238
1287
1375
1456
1491
1585
1886
2084
2167
F (Separation between MV bushings)
275
275
275
275
275
275
275
275
275
275
H (separation between LV bushings)
150
150
150
150
150
150
150
200
200
200
J (Distance between wheel axis)
670
670
670
670
670
670
820
820
820
1070
K (wheel width)
40
40
40
40
40
40
70
70
70
70
Ø (wheel diameter)
125
125
125
125
125
125
200
200
200
200
L (Wheel)
110
110
110
110
110
110
165
165
165
165
Oil Volume [Litres]
Total weight [Kg]
270
320
390
395
480
510
550
1020
1230
1390
1090
1355
1640
1835
2310
2510
2905
4020
4850
5525
16
From 25 up to 160 kVA • Insulation Level 24 kV
Dielectric Liquid Immersed Transformers
CHARACTERISTICS 24 kV: C0 CK (AC’)
F
F
MV Porcelain Bushings
MV Bushings
Lifting
Eyes
Surge arresters support (Op)
LV Bushings
D1
D2
140
Latching
eyes
C
80
Wheel Frames
(skids)
H
H
H
J
Draining and
Sampling
Device
Thermometer Pocket
(optional)
B
Filling
Device
K
J
L
L
Earth
connection
M12
MV Regulation
Tap Changer
A
ELECTRICAL CHARACTERISTICS
24 KV C0 CK (AC’)
RATED POWER [kVA]
Rated Voltage (Ur)
2525
40
50
Primary [kV]
63
100
160
20
No-load Secondary [V]
400 / 410 / 415 / 420 (to be defined)
Vector Group
Dyn/Yzn
Yzn11/Dyn11
No-Load Losses - Po [W]
List C0
75
105
125
145
210
300
Load Losses - Pk [W]
List Ck
700
940
1100
1270
1750
2350
4
4
4
4
4
4
List C0
45
47
47
48
49
52
cosƒ=1
2.84
2.40
2.26
2.08
1.81
1.54
cosƒ=0.8
3.96
3.83
3.77
3.70
3.57
3.43
Short-Circuit Impedance (%) at 75ºC
Sound Power Level LwA [dB]
Voltage drop at full load (%)
LOAD
100%
Efficiency (%)
LOAD
75%
cosƒ=1
96.99
97.45
97.61
97.80
98.08
98.37
cosƒ=0.8 96.27
96.84
97.03
97.27
97.61
97.97
cosƒ=1
97.56
97.93
98.06
98.21
98.43
98.67
cosƒ=0.8 96.97
97.43
97.58
97.78
98.05
98.34
40
50
63
100
160
DIMENSIONS [mm]
RATED POWER [kVA]
A (Length)
888
888
888
926
1.006
1.205
B (Width)
704
704
704
735
796
848
C (Height to cover)
780
869
828
859
911
847
1165
1254
1213
1244
1296
1232
936
D1 (Height to MV with porcelain bushings)
D3 (Height to MV Plug-In bushings)
869
958
917
948
1.000
D2 (Height to LV with Flags)
930
1.019
978
1.009
1.061
997
F (Separation between MV bushings)
275
275
275
275
275
275
H (separation between LV bushings)
J (Distance between wheel axis)
K (wheel width)
17
25 25
80
80
80
80
80
80
520
520
520
520
520
520
40
40
40
40
40
40
Ø (wheel diameter)
125
125
125
125
125
125
L (Wheel)
110
110
110
110
110
110
Distance between pole mounting brackets
530
530
530
530
530
530
Oil Volume [Litres]
100
110
100
125
150
190
Total weight [Kg]
370
440
445
520
670
790
From 250 up to 2500 kVA • Insulation Level 24 kV
Dielectric Liquid Immersed Transformers
CHARACTERISTICS 24 kV: C0 BK (CC’)
LV Plug-In Bushings
Filling Device
J
MV Porcelain
Bushings
C
D1
C
D3
LV Plug-In Bushings
Earth
connection
M12
Wheel
Frames
(skids)
J
Draining and
Sampling
Device
H H H
MV Porcelain Bushings
J
K
J
Draining
and
Sampling
Device
H H H
Thermometer
Pocket
L
K
F
Lifting
Eyes
L
M
Earth
connection
M12
Wheel
Frames
(skids)
F
MV Porcelain
Bushings
LV Plug-In Bushings
D2
F
M
F
D2
Lifting
Eyes
Thermometer
Pocket
MV Regulation
Tap Changer
B
MV Regulation
Tap Changer
B
Filling Device
A
A
24 kV: C0 BK (CC’)
ELECTRICAL CHARACTERISTICS
RATED POWER [kVA]
Rated Voltage (Ur)
250
400
500
630
800
Primary [kV]
1000
1250
1600
2000
2500
20
No-load Secondary [V]
400 / 410 / 415 / 420 (to be defined)
Vector Group
Dyn11 / Dyn5
No-Load Losses - Po [W]
List C0
425
610
720
860
930
1100
1350
1700
2100
2500
Load Losses- Pk [W]
List BK
2750
3850
4600
5400
7000
9000
11000
14000
18000
22000
4
4
4
4
6
6
6
6
6
6
Short-Circuit Impedance (%) at 75ºC
Sound Power Level LwA [dB]
Voltage drop at full load (%)
LOAD
55
58
59
60
61
63
64
66
68
71
cosƒ=1
1.17
1.04
1.00
0.93
1.05
1.08
1.06
1.05
1.08
1.06
cosƒ=0.8
100%
Efficiency(%)
LOAD
List C0
75%
3.22
3.13
3.10
3.06
4.35
4.37
4.38
4.35
4.35
4.35
98.75
98.90
98.95
99.02
99.02
99.00
98.98
99.03
99.03
99.03
cosƒ=0.8 98.44
98.63
98.69
98.77
98.78
98.75
98.73
98.79
98.79
98.79
cosƒ=1
98.96
99.08
99.13
99.18
99.20
99.19
99.17
99.21
99.21
99.21
cosƒ=0.8 98.70
98.86
98.91
98.98
99.00
98.98
98.97
99.01
99.02
99.02
2500
cosƒ=1
DIMENSIONS [mm]
RATED POWER [kVA]
A (Length)
B (Width)
C (Height to cover)
250
400
500
630
800
1000
1250
1600
2000
1376
1537
1622
1569
1997
1997
2007
1965
1965
2480
930
941
962
962
1200
1200
1182
1277
1277
1426
915
1004
1092
1169
1158
1158
1373
1671
1715
1836
D1 (Height to MV with porcelain bushings)
1300
1389
1477
1554
1543
1543
1758
2056
2100
2221
D3 (Height to MV Plug-In bushings)
1004
1093
1181
1258
1247
1247
1462
1760
1804
1925
D2 (Height to LV with Flags)
1149
1238
1353
1430
1491
1491
1706
2040
2084
2266
F (Separation between MV bushings)
275
275
275
275
275
275
275
275
275
275
H (separation between LV bushings)
150
150
150
150
150
150
150
200
200
200
J (Distance between wheel axis)
670
670
670
670
670
670
820
820
820
1070
K (wheel width)
40
40
40
40
40
40
70
70
70
70
Ø (wheel diameter)
125
125
125
125
125
125
200
200
200
200
L (Wheel)
110
110
110
110
110
110
165
165
165
165
Oil Volume [Litres]
Total weight [Kg]
260
325
390
390
520
500
660
1200
1245
1340
1100
1420
1810
1920
2530
2560
3200
4950
5150
5750
18
From 25 up to 160 kVA • Insulation Level 24 kV
Dielectric Liquid Immersed Transformers
CHARACTERISTICS 24 kV: C0 BK (CC’)
F
F
MV Porcelain Bushings
MV Bushings
Lifting
Eyes
Surge arresters support (Op)
LV Bushings
D1
80
C
D2
140
Latching
eyes
Wheel Frames
(skids)
H
H
H
J
Draining and
Sampling
Device
Thermometer Pocket
(optional)
B
Filling
Device
K
J
L
Earth
connection
M12
MV Regulation
Tap Changer
A
24 kV: C0 BK (CC’)
ELECTRICAL CHARACTERISTICS
25
25
RATED POWER [kVA]
Rated Voltage (Ur)
40
50
Primary [kV]
63
100
160
20
No-load Secondary [V]
400 / 410 / 415 / 420 (to be defined)
Vector Group
Dyn/Yzn
Yzn11 / Yzn5
No-Load Losses - Po [W]
List C0
75
105
125
145
210
300
Load Losses- Pk [W]
List Bk
560
750
875
1050
1475
2000
4
4
4
4
4
4
List C0
45
47
47
48
49
52
cosƒ=1
2.29
1.94
1.81
1.73
1.54
1.32
Short-Circuit Impedance (%) at 75ºC
Sound Power Level LwA [dB]
Voltage drop at full load (%)
cosƒ=0.8
3.79
3.63
3.57
3.53
3.43
3.31
97.52
97.91
98.04
98.14
98.34
98.58
cosƒ=0.8 96.92
97.40
97.56
97.68
97.94
98.23
cosƒ=1
97.96
98.27
98.38
98.47
98.63
98.83
cosƒ=0.8 97.47
97.85
97.98
98.09
98.30
98.54
25
40
50
63
100
160
A (Length)
888
888
926
926
1006
1205
B (Width)
704
704
704
704
796
848
C (Height to cover)
780
869
848
899
911
847
1165
1254
1233
1284
1296
1232
LOAD
100%
Efficiency(%)
LOAD
75%
cosƒ=1
DIMENSIONS [mm]
RATED POWER [kVA]
D1 (Height to MV with porcelain bushings)
D3 (Height to MV Plug-In bushings)
869
958
937
988
1000
936
D2 (Height to LV with Flags)
930
1019
998
1049
1061
997
F (Separation between MV bushings)
275
275
275
275
275
275
H (separation between LV bushings)
80
80
80
80
80
80
520
520
520
520
520
520
40
40
40
40
40
40
Ø (wheel diameter)
125
125
125
125
125
125
L (Wheel)
110
110
110
110
110
110
Distance between pole mounting brackets
530
530
530
530
530
530
Oil Volume [Litres]
100
110
115
125
160
190
Total weight [Kg]
380
460
490
548
690
820
J (Distance between wheel axis)
K (wheel width)
19
From 250 up to 2500 kVA • Insulation Level 36 kV
Dielectric Liquid Immersed Transformers
CHARACTERISTICS 36 kV: B036 BK36
MV Porcelain Bushings
LV Plug-In Bushings
F
Lifting
Eyes
F
F
LV Plug-In Bushings
F
LV Plug-In Bushings MV Porcelain Bushings
MV Porcelain Bushings
C
D1
D2
C
D3
D2
Lifting
Eyes
J
Thermometer
Pocket
Earth
connection
M12
K
J
Draining and
Sampling
Device
H H H
Thermometer
Pocket
B
Filling Device
L
J
Draining and
Sampling
Device
H H H
Filling Device
Wheel
Frames
(skids)
L
K
M
J
Earth
connection
M12
M
J
Wheel
Frames
(skids)
B
MV Regulation Tap
Changer
MV Regulation
Tap Changer
A
A
36 kV: B036 BK36
ELECTRICAL CHARACTERISTICS
RATED POWER [kVA]
Rated Voltage (Ur)
250
400
500
630
800
Primary [kV]
1000
1250
1600
2000
2500
25
No-load Secondary [V]
400 / 410 / 415 / 420 (to be defined)
Vector Group
Dyn11 / Dyn5
No-Load Losses - Po [W]
List B036
650
930
1100
1300
1500
1700
2100
2600
3150
3800
Load Losses - Pk [W]
List BK36
3500
4900
5600
6500
8400
10500
13500
17000
21000
26500
4.5
4.5
4.5
4.5
6
6
6
6
6
6
Short-Circuit Impedance (%) at 75ºC
Sound Power Level LwA [dB]
Voltage drop at full load (%)
LOAD
100%
Efficiency(%)
LOAD
75%
List B036
62
65
66
67
68
68
70
71
73
76
cosƒ=1
1.49
1.32
1.21
1.13
1.22
1.22
1.25
1.24
1.22
1.23
cosƒ=0.8
3.72
3.62
3.55
3.50
4.47
4.47
4.49
4.48
4.47
4.47
cosƒ=1
98.37
98.56
98.68
98.78
98.78
98.79
98.77
98.79
98.81
98.80
cosƒ=0.8 97.97
98.21
98.35
98.48
98.48
98.50
98.46
98.49
98.51
98.51
cosƒ=1
98.62
98.79
98.88
98.96
98.97
99.00
98.98
99.00
99.01
99.01
cosƒ=0.8 98.28
98.49
98.60
98.71
98.72
98.75
98.72
98.75
98.77
98.77
2500
DIMENSIONS [mm]
RATED POWER [kVA]
A (Length)
B (Width)
C (Height to cover)
250
400
500
630
800
1000
1250
1600
2000
1376
1537
1622
1592
1932
1997
2007
1922
1965
2093
930
941
962
962
1161
1200
1200
1224
1277
1487
915
1004
1026
1092
1112
1158
1230
1517
1715
1737
D1 (Height to MV with porcelain bushings)
1368
1442
1464
1530
1550
1596
1668
1955
2153
2175
D3 (Height to MV Plug-In bushings)
1050
1139
1161
1227
1247
1293
1365
1652
1850
1872
D2 (Height to LV with Flags)
1149
1238
1287
1353
1445
1491
1563
1886
2084
2167
F (Separation between MV bushings)
375
375
375
375
375
375
375
375
375
375
H (separation between LV bushings)
150
150
150
150
150
150
150
200
200
200
J (Distance between wheel axis)
670
670
670
670
670
670
820
820
820
1070
K (wheel width)
40
40
40
40
40
40
70
70
70
70
Ø (wheel diameter)
125
125
125
125
125
125
200
200
200
200
L (Wheel)
110
110
110
110
110
110
165
165
165
165
Oil Volume [Litres]
260
340
390
410
500
530
550
1000
1200
1400
1000
1330
1600
1800
2220
2480
2780
3850
4850
5350
Total weight [Kg]
20
From 25 up to 160 kVA • Insulation Level 36 kV
Dielectric Liquid Immersed Transformers
CHARACTERISTICS 36 kV: B036 BK36
F
MV Porcelain Bushings
F
Surge arresters support (Op)
MV Bushings
Lifting
Eyes
LV Bushings
D1
80
C
D2
140
Latching
eyes
Earth
connection
M12
Draining and
Sampling
Device
J
H
H
H
J
Thermometer Pocket
(optional)
B
Filling
Device
L
K
Wheel Frames
(skids)
MV Regulation
Tap Changer
A
36 kV: B036 BK36
ELECTRICAL CHARACTERISTICS
RATED POWER [kVA]
Rated Voltage (Ur)
25
40
50
Primary [kV]
63
100
160
25
No-load Secondary [V]
400 / 410 / 415 / 420 (to be defined)
Vector Group
Dyn/Yzn
Yzn11 / Yzn5
No-Load Losses - Po [W]
List B036
115
165
190
225
320
460
Load Losses- Pk [W]
List BK36
900
1110
1250
1435
1950
2550
4.5
Short-Circuit Impedance (%) at 75ºC
Sound Power Level LwA [dB]
Voltage drop at full load (%)
LOAD
4.5
4.5
4.5
4.5
50
51
52
53
56
59
cosƒ=1
3.64
2.84
2.57
2.35
2.03
1.68
cosƒ=0.8
100%
Efficiency(%)
LOAD
4.5
List B036
75%
4.50
4.35
4.26
4.17
4.01
3.83
96.10
96.91
97.20
97.43
97.78
98.15
cosƒ=0.8 95.17
96.17
96.53
96.81
97.24
97.70
cosƒ=1
96.79
97.44
97.67
97.86
98.15
98.45
cosƒ=0.8 96.02
96.82
97.11
97.34
97.69
98.06
cosƒ=1
DIMENSIONS [mm]
RATED POWER [kVA]
25
40
50
63
100
160
A (Length)
888
926
926
926
1006
1205
B (Width)
704
725
725
725
796
848
C (Height to cover)
768
810
810
859
889
847
1221
1263
1263
1312
1342
1300
D2 (Height to LV with Flags)
918
960
960
1009
1039
997
F (Separation between MV bushings)
375
375
375
375
375
375
H (separation between LV bushings)
80
80
80
80
80
80
520
520
520
520
520
520
40
40
40
40
40
40
Ø (wheel diameter)
125
125
125
125
125
125
L (Wheel)
110
110
110
110
110
110
Distance between pole mounting brackets
530
530
530
530
530
530
Oil Volume [Litres]
100
125
130
130
160
200
Total weight [Kg]
330
430
475
490
610
760
D1 (Height to MV with porcelain bushings)
J (Distance between wheel axis)
K (wheel width)
21
Notes
22
Notes
23
Notes
24
TECHNICAL-COMMERCIAL DEPARTMENT
Tel.: +34 94 431 87 31
Fax: +34 94 431 87 32
www.ormazabal.com
„
Transformer Substations up to 36 kV
x
x
„
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Prefabricated Transformer Substations
Medium Voltage Applications for Renewable Energies
Medium Voltage Switchgear Secondary Distribution
CGMCOSMOS System
CGM.3 System
Medium Voltage Switchgear Primary Distribution
CPG System
CPA System
Automation, Protection, Remote Control and Communication
Distribution Transformers
Dielectric Liquid Completely Immersed Transformers
Low Voltage Switchgear
CA·109·GB·1007